Spencer Morrill, however, thinks he's been dating Katy for six years and gets in touch with Nev Schulman and Max Joseph from Catfish just to double check that it's really her.

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Obviously they've never met face-to-face and he's spoken to her on the phone once - which incidentally resulted in a $270 phone bill - but they've been texting and emailing A LOT.

The fascinating episode sees Spencer completely convinced that he is in a relationship with Katy - even letting the boys know that she's sent him some unreleased songs... via YouTube links. Yeah, PUBLIC links.

"It was an immediate connection. A million 'I love yous' back and forth. It was pretty cool," Spencer explains, before revealing the engagement ring he had made for her, which cost him "25%" of his savings.

"I would like to meet face to face and see if there's a future here," he adds.

"She's awesome. Katy's funnier than I am, she's smarter than I am. I don't know how many people give her credit for that, but she's very intelligent. Katy's full of life, huge heart."

Of course, Spencer's hopes and dreams were shattered when Nev and Max traced Katy's number and email address to a woman named Harriet from Gloucester, England. Anyone we know?!

"We've found the person you've been talking to beyond really any shred of doubt, and you still want to believe the thing that makes you happier," Nev told him. "You need to know that you're not talking to Katy Perry.

"And you [Harriet] need to start thinking about the fact that this is the actual human being. As weird and crazy as he might be, he has a heart and was giving it to you 100% for six years of his life. For both of you, there's some self reflection that needs to happen."

Harriet responded. "For me it was enjoyable, but there's also that kind of realisation that I've lost myself in that... I just got to a point to where I couldn't imagine not talking to you.

"I've been through some tough times throughout the time we've been talking the past six years. Like, my dad died two years ago."

She added: "I'm genuinely sorry. I can't change what I did, but I understand that it was really wrong."